org.mockito

Annotation Type Spy

@Retention(value=RUNTIME)
 @Target(value=FIELD)
 @Documented
public @interface Spy

Allows shorthand wrapping of field instances in an spy object.

Example:

 public class Test{
    @Spy Foo spyOnFoo = new Foo();
    @Before
    public void init(){
       MockitoAnnotations.init(this);
    }
    ...
 }
 

Same as doing:

 Foo spyOnFoo = Mockito.spy(new Foo());
 

Warning if you call MockitoAnnotations.init(this) in a super class constructor then this will not work. It is because fields in subclass are only instantiated after super class constructor has returned. It's better to use @Before.